Signoe to george westinghouse



(No Model.) 2 Sheets-Sheet 1.

W. STANLEY, Jr. INGANDE$GENT ELECTRIC LAMP. No. 363,559. PatentedMay 24, 1887.

Zflilnwaes. Jam-272207:

RM 1} I (No Model.) 2 Sheets-Sheet 2. W. STANLEY, Jr.

INOANDESGENT ELECTRIC LAMP. No. 363,559. 7 Patented May 24, 1887.

when T:

UNITED STATES PATENT OFFICE.

\VILLIAM STANLEY, JR, OF GREAT BARRINGTON, MASSAOHUSETTS, AS- SIGNOR TO GEORGE \VESTINGHOUSE, JR, OF PITTSBURG, PENNSYL- VANIA.

IN CANDESOENT ELECTRIC LAMP.

SPECIFICATION forming part of Letters Patent No. 363,559. dated May 24, 1857.

Application filel October 8, 1885. Renewed September 4, 1886. Serial No.2l'2fl5]. (No model.)

To aZZ whom it may concern:

Be it known that I, WILLIAM STANLEY, J r., a citizen of the United States, residing at Great Harrington, in the county of Berkshire and State of lvfassachusetts, have invented certain new and useful Improvements in Incandescent Electric Lamps, of which the following is a specification.

The invention relates particularly to the construction of large incandescent electric be some eight inches in height and five inches in width, is employed as a vacuum-chamber. In this there are preferably placed two independent filaments supported in planes crossing each other at right angles. The loop of one filament extends beyond that of the other, and for this reason its supporting-points are preferably in a lower plane than those carrying the other filament. The upper end of the globe is provided with a short neck, which is designed to fit within a pressed-glass cup provided with means of attachment to the holder. The neck is preferably encircled by a corrugated brass or copper strip, which allows of expansion and contraction of the neck of the globe, and at the same time holds it securely in position. The conductingwires are led through the neck into the cup, where they are fastened to suitable binding-posts inserted at the lower end of the cup. Preferably, two conductors leading to the respective filaments are secured to one binding-post, and the remaining two conductors lead from the remaining ends of the filaments to independent bindingposts, so that the circuits through the two are independent of each other.

The cup is preferably secured to its holder by means of a lug upon the cup and a bayonetrespective bindingposts, and these at the same time tend to hold the cup within the holder by reason of their ends passing beyond the large portion of the binding-posts and pressing into the narrowed necks.

The holder is supported upon a suitable fixture, through which the conductors are led to and from the lamp.

In the accompanying drawings, Figures 1 and 2 are respectively an elevation and a section of the lamp and its holder. Figs. 3 and 4 are respectively a section and'a plan view of the cup, and Fig. 5 a perspective view of the holder. Figs. 6 and 7 show the corrugated metal washer applied to the neck of the lamp. Figs. 8 to l2'show certain details in the construction of the holder. In Fig. 9 an arrangement of circuits is illustrated.

Referring to the drawings, A represents a suitable vacuum-chamber, which is preferably constructed with a re-entrant portion, a, carrying suitable supports, 1) b b b", for the filaments B and B". The supports I) and I)? do not extend so far from the main portion a as do the supports I) and b. The former carry the filament B, while the latter carry the filament B, and the parts are so placed that the two filaments cross each other at right angles; but by reason of the difi'erence in the lengths of the supports the filament B crosses the plane of the filament B beyond the end of the loop of the latter, the lengths of the two filaments being the same.

The globe A is provided with a neck portion, 0, which is narrowed at its end,as shown at c. It is designed that the conductors 1, 2, 3, and 4, leading from the filaments, shall extend through the portion 0 of the neck to suitable binding-posts or cups, d, (P, and The two conductors 1 and 3 preferably lead to the post d,and the remaining conductors,2 and 4t,to the posts at and d, respectively. The neck of the globe is designed to enter a suitable glass cup,

E, which is preferably of pressed glass, and it is secured in position by means of the conductors, which are fastened to the binding post. A collar or washer, F, intervenes between the neck of the globe and the sides of the cup E. The collar is preferably of corrugated copper or other metal, and while it holds the neck of the globe tightly and prevents it from jarring, it at the same time permits it to expand and contract when heated and cooled without injury.

The cup E is narrowed at its upper end, through which the three binding-screws d,d", and d extend. Preferably these are screwed into a washer or plate, f, of non-conducting material, such as vulcanized fiber. A similar plate, f preferably covers the outer or upper surface of the end ofthe neck,and by this means good insulation is secured.

It is designed that the cup shall enter a metallic holder, H, and be secured thereto by means of a lug, h, entering a bayonet-joint, h, in the metal of the holder. The entrance to the bayonet-joint is not an open slot, but is formed by cutting away the metal, as shown at h, leaving a sufficient band to render the holder stiff and rigid atits edge. The lug his made upon the neck of the cup when the latter is first formed.

Within the metal holder H there are placed three contact-springs, 70', R and k, which are designed to make contact with the respective bindingposts d, (1 and d*. The binding-posts are provided with narrowed necks, as shown at d, and the contact-springs press inwardly toward the binding-posts, so that when the neck of the cup is inserted within the holder the springs tend by their pressure to draw the binding-posts farther into the holder, and they thus tend to hold it rigidly and secure good electrical connections.

It is apparent that the lamp must be turned in the holder after it is inserted. When first inserted, the binding-post al will make contact with the spring 70 but when the neck is turned so as to lock the lamp in position, then the three binding-posts will be brought into contact with their respective contact-springs.

In Fig. 9 the relation of the circuits which it is preferred to employ is shown. In this figure, 0 represents a battery or generator supplying the electricity, and 4 represents the conductor leading to'the contact-spring 7c, and thus to the two conductors 1 and 3, leading to thefilamentsBandB, respectively. Theother pole of the battery is connected by the conductor 5 with conductors 6 and 7, leading to the contact-springs 7c and k respectively, and these connect through their posts d and :2 respectively, with the remaining ends, I) and b A circuit-interrupting key may, if itis desired, be included in one of the conductors-as, for instance, the conductor 6.

I claim as my invention 1. The combination, substantially as hereinbefore set forth, with an incandescent electric lamp, of a glass cup for receiving the neck of the same, binding-posts inserted within said cup,an intervening corrugated metallic washer between said cup and globe, and a metallic holder for receiving said cup.

2. The combination, substantially as hereinbefore set forth, with the globe of an incandescent electric lamp, of a cup for receiving the same, hollow binding-posts for establishing electrical connections through the same, a metallic holder for receiving said cup,and contact-springs in said holder.

3. The combination, substantially as hereinbefore set forth, with the globe .of an incandescent electric lamp and a cup for receiving the same, of openings through said cup for securing electrical connections through the same, a metallic holder for receiving said cup, contact-springs within said holder, and means for uniting said cup with said holder.

4. The combination, substantially as hereinbefore set forth, in an incandescent electric lamp, of two filaments, two pairs of supporting-points for said filaments, one of which pairs extends into said globe a greater distance than the remaining pair.

. 5. The combination, substantially as hereinbefore set forth, with an incandescent electric lamp, of the cup for receiving the neck f the same, binding-posts extending through said cup and adapted to secure the conductors leading from the lamp, and a non-conducting plate within said cup, through which said binding-posts extend and into which they are fastened, substantially as described.

6. The combination, substantially as hereinbefore set forth, of an incandescent electric lamp, the cup for receiving the neck of the same, binding-posts extending through said cup and adapted to secure the conductors leading from the lamp, a non -conducting plate within said cup, through which said bindingposts extend and into which they are fastened, substantially as described, and a plate of nonconducting material at the base of said binding-post.

In testimony whereof I have hereunto subscribed my name this 28th day of September, A. D. 1885.

WILLIAM STANLEY, JR.

\Vitnesses:

D. 'W. EDGECOMB, CHARLES A. TERRY. 

